Lock



Dec. 9, 1924. 1,518,692

LE ROY G. CURTIS LOCK Filed Dec. 14, 1923 2 Sheets-Sheet 1 LeRoy G. Qwtis.

NNNNNN O R Dec. 9, 1924 1,518,692

LE ROY G. CURTIS LOCK Filed EC- 14. 1923 2 Sheets-Sheet 2 wfzg. 6.

LeRry G. Curtis INVENTOR ATTORN EY NETNESS:

1 bolt againstv movement.

Figure 7 1s a perspect ve view of the tum- Patented Dec. 9, 1924.

'uurrse STATES PATENT OFFICE.

LE nor GARRY oun'rrs, or EVERETT, WASHINGTON.

LOCK.

Application filed December 14, 1923.

To all whom it 'nmy/ concern Be it known that 1, Ln RoY' GARRY CUR- Tis a citizen of the United States, residing at *lverett, in the county of Snohomish and State of \Vashington have invented new and useful Improvements in Locks, of whlch the following is a specification.

- My present invention has-reference to a door lock. i

V In carrying out my invention it is my purpose to produce a door lock with a cyl ndrical casing so that the same maybe inserted in a round opening bored in a door and the tedious and laborious practice of mortising the door for the reception of the lock casing, overcome.

A further b](3Ct 1s to produce a door lock that includes a spring influenced bolt normally operated by the spindle to which the knobs are secured and being also provided with means for locking the same against movement, as when thc dooris to be held closed. I v

' The foregoing and other objects'which will present themselves as the nature '01? the invention is betterunderstood, may be accomplished by a construction, combination and operativeassociation of parts such as is disclosed by the drawings which accompany and which form part of this application.

In the drawings i Figure 1 is a side elevation-of a door and jamb therefor illustrating the application of the look, a portion of the door and j'amb being in section;

Figure 2 is an edge view of the door looking tow a rd the lock.

Figure 3 is a sectionalvieW on the line 33 of Figure l.

Figure 4: is a sectional view onthe line l-% of Figure 3.

inq bolt.

T igure 6 is a View of the tumblers which' provide the locking means for holding the blers in assembled relation. I

Figures 8 and 9 illustrate details.

As disclosed by the drawings, my lock can be attached to a door 1 by'simply boring a hole through one edge thereof, and also boring a hole transversely with respect to the first mentioned hole. The lock casing comprises a cylindrical member 1, the same, however, having its outer end provided with Figure 5 is a perspective view of the lock Serial No. 680,695. i

' a face. plate 2 which is preferably let in a depression in the edge of the door. The cylindrical casing 1, of course, is received in the longitudinal opening bored in the door, and in the transverse opening there is arranged a cross sectionally rounded sleeve'3 having a squared bore through which passes a square spindle t'that has on'its ends the knobs 5." The knobs contact withescutcheon plates 6 which are screwed in the sides of the door. The escutcheon plates are prefer? ably T-shaped, their' shorter and central branches being provided with key-hole openings 7 which register with key-hole openings 8 1n the sides of the tubular lock casing 1.

Arranged for slidable movement through th tubular casing 1 there isa bolt member; The bolt member is round in cross section and includes a solid outer portion 9 and an inner tubular portion 10. The solid portion 9 has one. of its faces beveled as at 9, where-" by'the same'may be retracted against the spring of the bolt (hereinafter described) when the bolt passes'over the keeper 12 in the jainb 13. The inner end of the solid portion 9 of the bolt is reduced, as at 50, so that the tubular portion fits thereover, a

removable pin 14: passes through a slot 51 in the reduced portion 50 and the tubular portion 10 holding-the parts 9 and 10together.

It will be apparent that the angle or beveled edge of the bolt may be arranged upon either side of the lock casing so that the door can swing through either side of the amb.

The tubular casing 1 has its sides, from 1ts1nner end provlded with aligning long1-.

parallel'arms of the bail-shaped member in contact with the angle end portions 18 thereof, and also in contact with a pin 20 that passes transversely throughthe lock casing 1, there is a helical spring 21. The spring, of coin-so, influences the bolt to projected, and therefor-etc locking position, but it will be apparent thatwhen the spindle is turned by the knobs 5 the bail-shaped member will v-ided' with the extension -has atransverse swing upon its pivotal connection with the lockingbolt and be guided through the slots 15 in the casing 1, retracting the bolt. A

release of either of the knobs will permit the springs to return the bolt' to initial-locking position.

It is, of course, desirable that the bolt be sustained in looking position, so that'the door to which the device is attached cannot be opened by unauthorized persons, andto provide for this I produce. a simple but thoroughly efi'ective locking means. locking means includes a pair of members which Ishall refer to as tumblers and'which are designated in the drawings by the numerals 21 and 22respectively. Themember 21 is what I will term theslidable element ofthe lockingdevice, the element" 22 being inthe nature of-the swingable element of the locking device. The element 21- is in the natureof a rectangular plate, being pro- Videdwith an-elongated opening23 through: which passes a pivot 24 that is secured-to thesides of the hollow member 10 of the bolt.

To properly guide the member 21' in its sliding. movement in the bolt, I form-one corner thereof with an extension 25 which is in contact with the wall of the bolt opposite that engaged by the opposite edgejof the member 21. The member 21, on its edge and adjacent its corner opposite that pronotch 26 therethrough and an outwardly and downwardly inclinedpassage 27 thatcommunicateswith the notch. The member 22 is substantially hook-shaped, that is one end thereof is provided with an; angle extensionin the nature of a-beak -28,-the body of themember being provided with a round" opening 29 through which-the pivotmember 24 passes. The end of the member'22, opposite that provided with the beak 28 iswidened and is formed with a V-shapcd notch 30. The member 22 is'provided" on one of its sides with a projecting pin or lug: 31 that is designed to ber'eceived in the: notch 26 and in thepassage 27 when the device is in looking position and when the beak 28 passes through registering openings- 32 and 33 in the bolt and in the casing. 1. The stud 31 normally rests on the upper edge of the member 21, being. sustained thereon through the medium of a' spring 34 which is secured to the pivot 24 and to the member 22. The spring. 34 causes theimember 21 to move toward the inner end of the straight inner edge of the slidable member The 34:, moving the same so that the stud .81 will be brought in alignment" with the notch 26, a further turning of the key engaging what I will term the upper angle wall provided at theV-shaped notched end 30 of the member 22, swinging the said member 22 to bring the bit 28 thereof into the aligning notches 32 and 33-of the bolt and of the casing. As the key moves oil of the wall of the member 22, the spring 34 will exert its influence toreturn the member 21 toinitial position, thuscausing the anglewall of the: passage- 27 '-to ride more eifectively over the stud 31- andmore effectively bring the bit 28 into the In'otches or openings 32 and 33; A movement of thekey in areverse direction will reverse the action above described, permitting the unlocking ,of the bolt from the casing? 1 and the free sliding ofthe-bolt on the turning of the knobs 3.

Having described the invention, I claim-:-- LA: lock having a cylindrical casing.- which is slotted, a bolt slidable in the casing, a-bailhaving angle endsconnected to thebolt and entering the slots of the casing, a revoluble element connectedv to the bail, and springmeans surrounding the bail contacting: the casing. and the angle arms of thebail.

2. A lock including a cylindrical casing: which is" slotted longitudinally, a-bolthavinga hollow inner end slidable through the cask ingtabail h-aving angle-ends passing through the bolt and entering the slots of the-casing, apin in: the casingpassing between the arms of the bail,a revoluble element loosely connected': with the bail a spring surrounding the arms or the bail. contactingythe ends thereof andithe pinwvhereby to-hold the boltnormally in latching position.

3. A look including a cylindrical casing which is slotted longitudinally-,- a': bolt liav ing a hollow inner'end slidable" through the casing, a bail having angle" ends pass-ing throughthebolt and entering the slotsof the casing, a pin in the casing. passing: between. the arms of the bail, a revoluble element loosely connected with the bail, a spring.- su-rrounding the arms of the bail contacting the ends thereof and the pin whereby to hold the bolt normally in latching. position, and means in the bolt for engaging the'casing: for locking; the-bolt in'ilatching position.

4-; A' lock including a cylindrical casing which is slotted longitudinally and: which is provided with a notch, cross sectionally rounded bolt including a hollow inner section arranged for slidable' movement in the casing, abail having angle ends= passing through the bolt and received in the slotsot the casing, a pin in the casing received between the arms ofthe bail, a spring surrounding; the bail exerting a tension between the pin and the endsof thebail, arevoluble element loosely connected with the bail for moving the bolt to unlatching position, a pivoted and a slidable tumbler in the bolt, said pivoted tumbler having an offset designed to be received through an opening in the bolt and to enter the notch in the casing and being further provided with an offset stud, said slidable tumbler having a notch and an angle passage communicating therewith to receive the stud therein when the 1 finger of the stud isin latching position,

and spring means influencing the slidable tumbler to cause the latter to move to retain the stud in the angle passage of the notch or to sustain the lug of the swinging tumbler over the movable tumbler when the first mentioned tumbler has been swung and the last mentioned tumbler has been moved.

In testimony whereof I afiix my signature.

LE ROY GARRY CURTIS. 

